Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study
We investigated genetic variability and genetic correlations in early life-history traits of Crassostrea gigas. Larval survival, larval development rate, size at settlement and metamorphosis success were found to be substantially heritable, whereas larval growth rate and juvenile traits were not. We...
Published in: | Journal of Evolutionary Biology |
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Wiley-Blackwell
2003
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Online Access: | https://pure.iiasa.ac.at/id/eprint/6891/ https://doi.org/10.1046/j.1420-9101.2003.00543.x |
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ftiiasalaxenburg:oai:pure.iiasa.ac.at:6891 2023-05-15T15:57:48+02:00 Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study Ernande, B. Clobert, J. McCombie, H. Boudry, P. 2003-05 https://pure.iiasa.ac.at/id/eprint/6891/ https://doi.org/10.1046/j.1420-9101.2003.00543.x unknown Wiley-Blackwell Ernande, B. <https://pure.iiasa.ac.at/view/iiasa/1238.html>, Clobert, J., McCombie, H., & Boudry, P. (2003). Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study. Journal of Evolutionary Biology 16 (3) 399-414. 10.1046/j.1420-9101.2003.00543.x <https://doi.org/10.1046/j.1420-9101.2003.00543.x>. doi:10.1046/j.1420-9101.2003.00543.x Article PeerReviewed 2003 ftiiasalaxenburg https://doi.org/10.1046/j.1420-9101.2003.00543.x 2023-04-07T14:47:13Z We investigated genetic variability and genetic correlations in early life-history traits of Crassostrea gigas. Larval survival, larval development rate, size at settlement and metamorphosis success were found to be substantially heritable, whereas larval growth rate and juvenile traits were not. We identified a strong positive genetic correlation between larval development rate and size at settlement, and argue that selection could optimize both age and size at settlement. However, trade-offs, resulting in costs of metamorphosing early and large, were suggested by negative genetic correlations or covariances between larval development rate/size at settlement and both metamorphosis success and juvenile survival. Moreover, size advantage at settlement disappeared with time during the juvenile stage. Finally, we observed no genetic correlations between larval and juvenile stages, implying genetic independence of life-history traits between life-stages. We suggest two possible scenarios for the maintenance of genetic polymorphism in the early life-history strategy of C. gigas. Article in Journal/Newspaper Crassostrea gigas Pacific oyster IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository) Pacific Journal of Evolutionary Biology 16 3 399 414 |
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Open Polar |
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IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository) |
op_collection_id |
ftiiasalaxenburg |
language |
unknown |
description |
We investigated genetic variability and genetic correlations in early life-history traits of Crassostrea gigas. Larval survival, larval development rate, size at settlement and metamorphosis success were found to be substantially heritable, whereas larval growth rate and juvenile traits were not. We identified a strong positive genetic correlation between larval development rate and size at settlement, and argue that selection could optimize both age and size at settlement. However, trade-offs, resulting in costs of metamorphosing early and large, were suggested by negative genetic correlations or covariances between larval development rate/size at settlement and both metamorphosis success and juvenile survival. Moreover, size advantage at settlement disappeared with time during the juvenile stage. Finally, we observed no genetic correlations between larval and juvenile stages, implying genetic independence of life-history traits between life-stages. We suggest two possible scenarios for the maintenance of genetic polymorphism in the early life-history strategy of C. gigas. |
format |
Article in Journal/Newspaper |
author |
Ernande, B. Clobert, J. McCombie, H. Boudry, P. |
spellingShingle |
Ernande, B. Clobert, J. McCombie, H. Boudry, P. Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study |
author_facet |
Ernande, B. Clobert, J. McCombie, H. Boudry, P. |
author_sort |
Ernande, B. |
title |
Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study |
title_short |
Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study |
title_full |
Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study |
title_fullStr |
Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study |
title_full_unstemmed |
Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study |
title_sort |
genetic polymorphism and trade-offs in the early life-history strategy of the pacific oyster, crassostrea gigas (thunberg, 1795): a quantitative genetic study |
publisher |
Wiley-Blackwell |
publishDate |
2003 |
url |
https://pure.iiasa.ac.at/id/eprint/6891/ https://doi.org/10.1046/j.1420-9101.2003.00543.x |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
Ernande, B. <https://pure.iiasa.ac.at/view/iiasa/1238.html>, Clobert, J., McCombie, H., & Boudry, P. (2003). Genetic polymorphism and trade-offs in the early life-history strategy of the Pacific oyster, Crassostrea gigas (Thunberg, 1795): A quantitative genetic study. Journal of Evolutionary Biology 16 (3) 399-414. 10.1046/j.1420-9101.2003.00543.x <https://doi.org/10.1046/j.1420-9101.2003.00543.x>. doi:10.1046/j.1420-9101.2003.00543.x |
op_doi |
https://doi.org/10.1046/j.1420-9101.2003.00543.x |
container_title |
Journal of Evolutionary Biology |
container_volume |
16 |
container_issue |
3 |
container_start_page |
399 |
op_container_end_page |
414 |
_version_ |
1766393506942681088 |